View clinical trials related to Macular Degeneration.
Filter by:This is a prospective, observational, multi-center, study. The study will be conducted in approximately 12 ophthalmological clinics and practices throughout Greece. It is planned to collect data on treatment of wet Age related Macular Degeneration (wAMD) from about 120 patients for which the decision to treat with intravitreal aflibercept injections is made at the discretion of the attending physician, according to his/her medical practice. Visits will be performed at baseline, aflibercept first injection (if different from enrollment) and at 12 and 24 months. The 12 and 24 month comprise the data collection visits during which any data generated in the period preceding these visits will be recorded. All required information for the purposes of this study will be collected using electronic Case Record Form (eCRF). The web-based electronic data capture (EDC) application will be specifically designed for the needs of the study and will adhere to all applicable data protection regulations and requirements with regard to electronic records. The study observation period for each patient enrolled in this study is the time from the beginning of treatment with intravitreal aflibercept injection up to two years or until discontinuation of intravitreal aflibercept injection-treatment due to any reason including withdrawal of consent or patient loss from follow-up.
In this study, ocular discomfort following intravitreal injection in naïve patients will be studied, as well as the efficacy of wetting agent (Optive eyewash) to prevent ocular discomfort.
To evaluate the effectiveness of subthreshold laser treatment on retinal sensitivity in patients with reticular pseudodrusen and incipient Geographic Atrophy (GA) secondary to Age-Related Macular Degeneration (AMD). Secondary objective is to investigate changes in best-corrected visual acuity, atrophy progression and safety.
Age-Related Macular Degeneration (ARMD) is the most common cause of blindness in the adult population of the Western World. It affects the macula - the region of the retina most rich in photoreceptors and responsible for central vision. The ethiology of ARMD remains poorly understood. Population-based studies have demonstrated a complex ethiology, with contributions from a combination of genetic and environmental factors. Two major forms of ARMD are clinically distinguishable: the dry and wet form. The latter represents the more aggressive clinical subgroup, and is characterized by the abnormal growth of new blood vessels (neovascularization) under the macula, thus leading to the accumulation of fluid under the retina, bleeding, progression to fibrosis, and finally loss of central vision. The pathogenesis of this neovascularization is not fully understood, although the VEGF pathway is well known to be involved in angiogenesis and was implicated in the development of the new vessels under the macula. The VEGFs are the most specific and potent stimulators of the angiogenesis. Molecules that bind and inactivate the VEGF have been developed for the treatment of ARMD and they are applied in ARMD clinic through intra vitreal injections.The difference seen in response to anti VEGF treatment for ARMD between the patients is suggestive for the presence of factors influencing the effect of the drug. Some of these could be genetic variants within genes involved in ARMD pathogenesis or VEGF pathway. Few associations with markers within genes previously found to be related with the pathogenesis of ARMD have been found. It remains unknown whether variants involved in the anti VEGF treatment response could influence the therapeutic outcome. The purpose of this trial is to evaluate the association between a panel of selected polymorphic markers in the VEGF pathway and the response to therapy with anti VEGF antibody for ARMD. The hypothesis is that the individual genotype influences the response to the anti VEGF. This can lead to identification of genetic biomarkers allowing treatment individualization and optimization of the visual outcomes.
To assess the five-year incidence of AMD in a population from the central region of Portugal, previously phenotypically characterized.
To determine safety and efficacy of intravitreal injections of Sirolimus with adjunct EYLEA in subjects with exudative age related macular degeneration (AMD) with persistent intraretinal or subretinal edema due to neovascular AMD despite previous intravitreal anti-vascular endothelial growth factor (antiVEGF) treatment.
The purpose of this research study is to determine if photobiomodulation is an effective treatment of Dry Age-Related Macular Degeneration (AMD) and vision loss associated with the disease.
Maculopathy induced by retinal toxicity of synthetic antimalarials is to be screened at the sub-clinical stage. Indeed, when the first visual symptoms appear, macular damage is already irreversible and the clinical picture may even continue to deteriorate for several years after the end of synthetic antimalarial use. In opposition, the early termination of hydroxychloroquine in patients showing recent alterations on the multifocal electroretinogram (nfERG) allowed he reversibility of toxic damage over a six month period. It is therefore critical to detect early retinal anatomic changes during retinotoxicity screening before the occurrence of irreversible anatomical and functional consequences. The usual patient monitoring consists of an annual eye examination, detecting subjective functional abnormalities (visual acuity, color vision, central visual field testing) or macular lesions (eye fundus). These abnormalities show a constituted infringement and do not contribute to the early diagnosis of synthetic antimalarial maculopathy. The mfERG is an objective examination, able to detect retinal damage whilst still reversible. It is recommended during the annual monitoring and is, today, the gold standard for the screening and diagnosis of synthetic antimalarial maculopathy. However, its realization is time consuming, requires a good patient cooperation and is difficult to access due to the few ophthalmology centers offering it. In practice, it is rarely done as a systematic annual screening for patients on long-term synthetic antimalarial treatment. It is often limited to second-line studies (for patients already showing functional or anatomical abnormalities) whereas its interest lies in the detection of early lesions. The Optical Coherence Tomography Spectral Domain (OCT-SD) is a non-invasive eye examination, commonly used since nearly 10 years. A special image analysis provides a panoramic viewing of the state of the photoreceptor layer, and a non-invasive detection of any anatomical changes, even subtle, within this layer. The concordance between the "en face" OCT and the mfERG in the screening of synthetic antimalarial maculopathy is considered in this study.
Retinal blood flow measurement is of scientific and clinical value. For this purpose retinal vessel morphology (such as diameter, vessel wall thickness, etc) determination is crucial. Different imaging modalities might provide divergent results. Thus, quantification of such differences is valuable. The present study aims to reveal and quantify differences in vessel morphology between fundus photography, fundus angiography, and optical coherence tomography in health and disease.
The primary objective of the study is to compare the efficacy of intravitreal (IVT)-administered REGN910-3 compared to intravitreal aflibercept injection (IAI).